From 71803160ee0cc465b842c0f6591cb0e8a4bc188f Mon Sep 17 00:00:00 2001
From: Timon <42844075+athena-luka@users.noreply.github.com>
Date: Sun, 11 Jun 2023 20:39:43 +0200
Subject: [PATCH] fix collections.Sequence deprecation without removing Python
 2 support

---
 tgt/core.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tgt/core.py b/tgt/core.py
index fb58955..5282e42 100644
--- a/tgt/core.py
+++ b/tgt/core.py
@@ -19,12 +19,15 @@
 from __future__ import division
 
 import bisect
-import collections
 import warnings
 import copy
 import math
 import operator
 import re
+try:
+    from collections.abc import Sequence
+except ImportError:
+    from collections import Sequence
 
 
 __all__ = [
@@ -57,7 +60,7 @@ def add_tier(self, tier):
 
     def add_tiers(self, tiers):
         '''Add a sequence of tiers.'''
-        if isinstance(tiers, collections.Sequence):
+        if isinstance(tiers, Sequence):
             for tier in tiers:
                 self.add_tier(tier)
         else: